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| 1 | Reactive oxygen species signaling and stomatal movement in plant responses to drought stress and pathogen attack显示文摘Stomata, the pores formed by a pair of guard cells, are the main gateways for water transpiration and photosynthetic CO_2 exchange, as well as pathogen invasion in land plants. Guard cell movement is regulated by a combination of environmental factors, including water status, light, CO_2 levels and pathogen attack, as well as endogenous signals, such as abscisic acid and apoplastic reactive oxygen species(ROS). Under abiotic and bioticstress conditions, extracellular ROS are mainly produced by plasma membrane-localized NADPH oxidases, whereas intracellular ROS are produced in multiple organelles. These ROS form a sophisticated cellular signaling network, with the accumulation of apoplastic ROS an early hallmark of stomatal movement. Here, we review recent progress in understanding the molecular mechanisms of the ROS signaling network,primarily during drought stress and pathogen attack. We summarize the roles of apoplastic ROS in regulating stomatal movement, ABA and CO_2 signaling, and immunity responses.Finally, we discuss ROS accumulation and communication between organelles and cells. This information provides a conceptual framework for understanding how ROS signaling is integrated with various signaling pathways during plant responses to abiotic and biotic stress stimuli. | Junsheng Qi Chun-Peng Song Baoshan Wang Jianmin Zhou Jaakko Kangasjarvi Jian-Kang Zhu Zhizhong Gong | 2018 | Journal of Integrative Plant Biology2018，60，9： | 38 |
| 2 | Occurrence and infection risk of waterborne pathogens in Wanzhou watershed of the Three Gorges Reservoir, China显示文摘The Three Gorges Reservoir (TGR), formed by China's Yangtze Three Gorges Project, is the largest lake in the world, but there is too little information available about fecal contamination and waterborne pathogen impacts on this aquatic ecosystem. During two successive 1-year study periods (July 2009 to July 2011), the water quality in Wanzhou watershed of the TGR was tested with regard to the presence of fecal indicators and pathogens. According to Chinese and World Health Organization water quality standards, water quality in the mainstream was good but poor in backwater areas. Salmonella, Enterohemorrhagic Escherichia coli (EHEC), Giardia and Cryptosporidium were detected in the watershed. Prevalence and concentrations of the pathogens in the mainstream were lower than those in backwater areas. The estimated risk of infection with Salmonella, EHEC, Cryptosporidium, and Giardia per exposure event ranged from 2.9 × 10 -7 to 1.68 × 10-5 , 7.04 × 10-10 to 2.36 × 10-7 , 5.39 × 10-6 to 1.25 × 10-4 and 0 to 1.2 × 10-3 , respectively, for occupational divers and recreational swimmers exposed to the waters. The estimated risk of infection at exposure to the 95% upper confidence limit concentrations of Salmonella, Cryptosporidium and Giardia may be up to 2.62 × 10-5 , 2.55 × 10-4 and 2.86 × 10-3 , respectively. This study provides useful information for the residents, health care workers and managers to improve the safety of surface water and reduce the risk of fecal contamination in the TGR. | Guosheng Xiao Zhaodan Wang Ji'an Chen Zhiqun Qiu Yanjie Li Junsheng Qi Wenyi Liu Weiqun Shu | 2013 | Journal of Environmental Sciences2013，25，9： | 7 |
| 3 | Arabidopsis U-box E3 ubiquitin ligase PUB11 negatively regulates drought tolerance by degrading the receptor-like protein kinases LRR1 and KIN7显示文摘Both plant receptor-like protein kinases(RLKs)and ubiquitin-mediated proteolysis play crucial roles in plant responses to drought stress.However,the mechanism by which E3 ubiquitin ligases modulate RLKs is poorly understood.In this study,we showed that Arabidopsis PLANT U-BOX PROTEIN 11(PUB11),an E3 ubiquitin ligase,negatively regulates abscisic acid(ABA)-mediated drought responses.PUB11 interacts with and ubiquitinates two receptor-like protein kinases,LEUCINE RICH REPEAT PROTEIN 1(LRR1)and KINASE 7(KIN7),and mediates their degradation during plant responses to drought stress in vitro and in vivo.pub11 mutants were more tolerant,whereas Irr1 and kin7 mutants were more sensitive,to drought stress than the wild type.Genetic analyses show that the pub11 Irr1 kin7 triple mutant exhibited similar drought sensitivity as the Irr1 kin7 double mutant,placing PUB11 upstream of the two RLKs.Abscisic acid and drought treatment promoted the accumulation of PUB11,which likely accelerates LRR1 and KIN7 degradation.Together,our results reveal that PUB11 negatively regulates plant responses to drought stress by destabilizing the LRR1 and KIN7 RLKs. | Xuexue Chen Tingting Wang Amin Ur Rehman Yu Wang Junsheng Qi Zhen Li Chunpeng Song Baoshan Wang Shuhua Yang Zhizhong Gong | 2021 | Journal of Integrative Plant Biology2021，63，3： | 2 |
| 4 | RAF22,ABI1 and OST1 form a dynamic interactive network that optimizes plant growth and responses to drought stress in Arabidopsis显示文摘Plants adapt to their ever-changing environment via positive and negative signals induced by environmental stimuli.Drought stress,for instance,induces accumulation of the plant hormone abscisic acid(ABA),triggering ABA signal transduction.However,the molecular mechanisms for switching between plant growth promotion and stress response remain poorly understood.Here we report that RAF(rapidly accelerated fibrosarcoma)-LIKE MITOGEN-ACTIVATED PROTEIN KINASE KINASE KINASE 22(RAF22)in Arabidopsis tha/iana physically interacts with ABA INSENSITIVE 1(ABl1)and phosphorylates ABl1 at Ser416 residue to enhance its phosphatase activity.Interestingly,ABl1 can also enhance the activity of RAF22 through dephosphorylation,reciprocally inhibiting ABA signaling and promoting the maintenance of plant growth under normal conditions.Under drought stress,however,the ASA-activated OPEN STOMATA1(OST1)phosphorylates the Ser81 residue of RAF22 and inhibits its kinase activity,restraining its enhancement of ABl1 activity.Taken together,our study reveals that RAF22,ABl1,and OST1 form a dynamic regulatory network that plays crucial roles in optimizing plant growth and environmental adaptation under drought stress. | Zhihui Sun Zhenkai Feng Yanglin Ding Yuanpeng Qi Shan Jiang Zhen Li Yu Wang Junsheng Qi Chunpeng Song Shuhua Yang Zhizhong Gong | 2022 | Molecular Plant2022，15，7： | 1 |
| 5 | BAK1 plays contrasting roles in regulating abscisic acid-induced stomatal closure and abscisic acid-inhibited primary root growth in Arabidopsis显示文摘The mechanisms that balance plant growth and stress responses are poorly understood, but they appear to involve abscisic acid(ABA) signaling mediated by protein kinases. Here, to explore these mechanisms, we examined the responses of Arabidopsis thaliana protein kinase mutants to ABA treatment. We found that mutants of BRASSINOSTEROID INSENSITIVE 1-ASSOCIATED RECEPTOR KINASE 1(BAK1) were hypersensitive to the effects of ABA on both seed germination and primary root growth. The kinase OPEN STOMATA 1(OST1) was more highly activated by ABA in bak1 mutant than the wild type. BAK1 was not activated by ABA treatment in the dominant negative mutant abi1-1 or the pyr1 pyl4 pyl5 pyl8 quadruple mutant, but it was more highly activated by this treatment in the abi1-2 abi2-2 hab1-1 loss-of-function triple mutant than the wild type. BAK1 phosphorylates OST1 T146 and inhibits its activity. Genetic analyses suggested that BAK1 acts at or upstream of core components in the ABA signaling pathway, including PYLs, PP2 Cs,and Sn RK2 s, during seed germination and primary root growth. Although the upstream brassinosteroid(BR) signaling components BAK1 and BR INSENSITIVE 1(BRI1) positively regulate ABAinduced stomatal closure, mutations affecting downstream components of BR signaling, including BRASSINOSTEROID-SIGNALING KINASEs(BSKs)and BRASSINOSTEROID-INSENSITIVE 2(BIN2), did not affect ABA-mediated stomatal movement. Thus,our study uncovered an important role of BAK1 in negatively regulating ABA signaling during seed germination and primary root growth, but positively modulating ABA-induced stomatal closure, thus optimizing the plant growth under drought stress. | Jinping Deng Lingyao Kong Yinhua Zhu Dan Pei Xuexue Chen Yu Wang Junsheng Qi Chunpeng Song Shuhua Yang Zhizhong Gong | 2022 | Journal of Integrative Plant Biology2022，64，6： | 1 |
| 6 | Occurrence and potential health risk of cryptosporidium and Giardia in the Three Gorges Reservoir, China 显示文摘 | Guosheng Xiao Zhiqun Qiu Junsheng Qi | 2013 | Water Research2013，47，6： | 1 |
| 7 | Potential Ecological Risk Assessment of Heavy Metal Pollution in Sediments of the Yangtze River Within the Wanzhou Section, China显示文摘 | Chuan Fu Jinsong Guo Jie Pan Junsheng Qi Weisheng Zhou | 2009 | 2009 (1-3)2009，，1： | 1 |
| 8 | GbAt11 gene cloned from Gossypium barbadense mediates resistance to Verticillium wilt in Gossypium hirsutum显示文摘Background:Gossypium hirsutum is highly susceptible to Verticillium wilt,and once infected Verticillium wilt,its yield is greatly reduced.But G.barbadense is highly resistant to Verticillium wilt.It is possible that transferring some disease-resistant genes from G.barbadense to G.hirsutum may contribute to G.hirsutum resistance to Verticillium wilt.Result:Here,we described a new gene in G.barbadense encoding AXMN Toxin Induced Protein-11,Gb At11,which is specifically induced by Verticillium dahliae in G.barbadense and enhances Verticillium wilt resistance in G.hirsutum.Overexpression in G.hirsutum not only significantly improves resistance to Verticillium wilt,but also increases the boll number per plant.Transcriptome analysis and real-time polymerase chain reaction showed that Gb At11 overexpression can simultaneously activate FLS2,BAK1 and other genes,which are involved in ETI and PTI pathways in G.hirsutum.Conclusion:These data suggest that Gb At11 plays a very important role in resistance to Verticillium wilt in cotton.And it is significant for improving resistance to Verticillium wilt and breeding high-yield cotton cultivars. | QIU Tingting WANG Yanjun JIANG Juan ZHAO Jia WANG Yanqing QI Junsheng | 2020 | Journal of Cotton Research2020，3，2： | 0 |
| 9 | Monte Carlo simulation based thinning and calculating method for noninvasive blood glucose sensing by near-infrared spectroscopy显示文摘Previous results show that the floating reference theory(FRT)is an effective tool to reduce the infuence of interference factors on noninvasive blood glucose sensing by near infrared spectros-copy(NIRS).It is the key to measure the floating reference point(FRP)precisely for the application of FRT.Monte Carlo(MC)simulation has been introduced to quantitatively in-vestigate the effects of positioning errors and light source drifts on measuring FRP.In this article,thinning and calculating method(TCM)is proposed to quantify the positioning error.Mean-while,the normalization process(NP)is developed to significantly reduce the error induced by light source drift.The results according to TCM show that 7 purm deviations in positioning can generate about 10.63%relative error in FRP.It is more noticeable that 1%fluctuation in light source intensity may lead to 12.21%relative errors.Gratifyingly,the proposed NP model can effectively reduce the error caused by light source drift.Therefore,the measurement system for FRPs must meet that the positioning error is less than 7 purm,and the light source drift is kept within 1%.Furthermore,an improvement for measurement system is proposed in order to take advantage of the NP model. | Congcong Ma Jia Qin Qi Zhang Junsheng Lu Kexin Xu Jingying Jiang | 2017 | Journal of Innovative Optical Health Sciences2017，，2： | 0 |
| 10 | Study on Rice Water Requirement of Liangping County under Climate Change Background显示文摘Under global climate change background,using daily meteorological data at Liangping ground meteorological station during 1961- 2012,we calculated crop water requirement and net irrigation water requirement during rice growth period in Liangping County,and analyzed its climate tendency rate. Results showed that climate tendency rate of crop water requirement during growth period of rice was only- 0. 007 mm /10 a; climate tendency rate of rainfall was- 0. 06 mm /10 a,but interannual change was relatively larger; climate tendency rate of net irrigation water requirement was 0. 011 mm /10 a. In the years when drought occurred,such as 2006 and 2011,both rice water requirement and net irrigation water requirement in Liangping were greatly higher than means over the years. Therefore,we should focus on drought pre-warning and risk management improving drought disaster prevention in Liangping in the future. | Gao Fei Qi Junsheng Wang Qinqin Zhang Ting Mou Xinli | 2014 | Meteorological and Environmental Research2014，5，9： | 0 |
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